<template>
  <div class="tabs">
    <el-tag
      v-for="(item,index) in tags"
      :key="item.path"
      :closable="item.name !== 'home'"
      :effect="$route.name === item.name ? 'dark' : 'plain'"
      @click="changeMenu(item)"
      @close="handleClose(item,index)"
      :disable-transitions="true"
    >
      {{ item.label }}
    </el-tag>
  </div>
</template>
<script>
import { mapState, mapMutations } from "vuex";
export default {
  name: "CommonTag",
  data() {
    return {};
  },
  computed: {
    ...mapState({
      tags: (state) => state.tab.tabsList,
    })
  },
  methods: {
    ...mapMutations([ 'closeTag']),
    //点击tag跳转的功能
    changeMenu(item) {
      this.$router.push({ name: item.name });
    },
    //点击tag删除的功能
    handleClose(item , index){
      //调用store中的mutation
      this.closeTag(item)
      const length=this.tags.length 
      //删除之后的跳转
      if(item.name!==this.$route.name){
        return
      }
      //表示删除的最后一个
      if(index==length){
        this.$router.push({
          name:this.tags[index-1].name
        })
      }else{
        this.$router.push({
          name:this.tags[index].name
        })
      }
    }
  },
};
</script>
<style lang="less" scoped> 
.tabs{
  padding:20px;
  .el-tag{
    margin-right: 5px;
    cursor:pointer;
  }
}
</style>
